Manifold.



G. MCFARLAND.

MANIFOLD'.

Mmc/mon msn MAR. 21. me.

Lmwmm Patented Dee. 11,1917.

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UNTTED sTATEs PATENT oEEIoE.

GEORGE MGFARLAND, OF PEORIA, ILLINOIS, ASSIGNOR TO MGFABLAND COMPANY, OF

- PEORIA, ILLINOIS, A. CORPORATION OF ILLINOIS.

MANIFOLD.

nadas-ia.

Specification of Letters Patent.

Patented Dec.- 11, 191V.

Application tiled March 27, 1916. Serial No. 86,949.

To all whom it may concern.

Be it known that I, GEORGE MCFARLAND,

a citizen of the United States, and resident folds vfor use on internal combustion motors E hreit is desired to employ kerosene as a The object of my invention is to provide a manifold by means of which the engine can be started on gasolene as a fuel and` whereby when the engine has become heated, the

fuel may be changed from gasolene to kerosene and the operation of the engine con- Further objects of my invention will be@ referred to and described as the specification proceeds.

The novelty of my invention will hereinafter be more fully set forth and 'specifically pointed out in the claims.

ln the accompanying drawing;

Figure l is a sectional plan view of a manifold embodying my invention, taken on the dotted line 1 1 of Fi 2.

Fig. 2 is a sectionalside e evaton of the uanifold taken on the dotted line 2--2 of ig. l.

Fig. 3 is a sectional lend view dotted line 3-3 of Fig. 2.A

The same numerals of reference are used to indicate identical parts in all the figures.

'lhe manifold consists, asshown, of a boxlike structure l, forming a cavity to receive the exhaust gases through the ports 2, which register with the exhaust ports of the cylinders of any suitable engine, not shown.

An exhaust outlet 3, is provided, and the usual exhaustpipe is connected to this exhaust outlet. e

Anintake passage 4, which is formed integral with the manifold, lies within the exhaust cavity and leads from a connecting surface 5,to which any suitable carbureter may be connected, to ports 6, which register with suitable intake ports of the .cylinders of an engine.

taken on the The structure shown is intended primarily for use on a four cylinder en ne, though by modification it could be equa 1y well adapted to any other number of cylinders. The lower wall of the intake passage 4, as shown clearly in Fig. 2 is inclined from vthe ports 6 to the/surface 5 in such manner that anyliquid articles of fuel will drain back to the car ureter and will not collect vin the intake passage. f

It will also be observed that the intake passage partly overlaps a part of two of the exhaust ports 1n such manner that the exhaust gases will impinge directly on the side and top wall of the intake passage before these gases have expanded to a point which will materially reduce their temperature, thereby heating the sid and top wall of the intake passage so thatthe entering fuel, by striking this heated portion, will be thoroughly gasilied. y

It islwell known' that if hot compressed gases are permitted to expand the temperature of these gases drops very rapidly. By

'placing the intake passage so as to partly y overlap one or more of the exhaust portsy so that part of the flame vonf entering the exhaust cavity strikes the side wall while the balance strike the top wall to heat the intake passage directly above the inlet port thereof, I am enabled to suiiiciently heat this passage to thoro hly vaporize the particles of kerosene hile they are passing through.

- To afford an easy and convenient. method of attaching the manifold to the cylinders, I provide cored lugs 7 throu h which studs or bolts may pass to 'said cy inders.

Having thus fully described my invention,

I claim:

1. A combined intake and exhaust man1-- fold comprising in part an outer wall said` manifold being provided with a series of exhaust ports opening into an exhaust cavity,

an Ainlet passage partly formed by the outer wall above mentioned and lying entirely within the exhaust cavity and having part of its length partly opposite at least one of said exhaust ports in such manner that thestream ofexhaust gases on entering the exhaust cavity will e divided by said inlet passage and'caused' to flow partly over the top of said passage and down the side, an inlet port opening into said passage,

' and outlet -ports o ening from said passage.

2. A combined mtake and exhaust manifold comprising a box-like structure, having 5`an outer wall, an inlet assage formed integral therewith, connections from said inlet passage to the wall opposite said outer wall,

meeneeantinlet port opening into said inlet passage, and exhaust ports opening into the exhaust cav-ity of the manifold in such Way that the projected area of at least one of said exhaust ports will intersect the inner surface of part of said inlet assage.

GEGRGE Mc ARLAND. 

